Metallic block for roof or other trusses



( N QMod eL) L, DUVINAGE. METALLIC BLOQKI'OR ROD-P OR OTHER TRUSSES.

Patented Feb. '4, 1896.

ANDREW EBB/MAM PNOTO-LI'MIQWASHINGTUILRC,

UNITED STATES PATENT- OFFICE.

LOUIS DUVINAGE, OF BROOKLYN, NEW YORK.

METALLIC BLOCK FOR ROOF OR OTHER TRUSSE'S.

SPECIFICATION forming part of Letters Patent No. 553,903, dated February4, 1896.

Application filed March 19, 1894.

To all whom it may concern:

Be it known that I, LOUIS DUVINAGE, of Brooklyn, Kings county, in theState of New York, have invented certain new and useful Improvements inTruss-Plates for Roofs or Analogous Structures, of which the followingis a specification.

My invention relates to means for mounting and securing the ends oftimbers and the adjacent parts of trusses'for roofs, bridges, &c. Iprovide simple and easily-applicable castings adapted to receive andhold the ends of the timbers at the required inclinations and at theproper points, the timbers to be cut square across the ends.

The following is a description of what I consider the best means ofcarrying out the invention.

In the drawings, Figure 1 is a view representing a roof-truss of whichthe pattern on the right includes but one strut and that on the left twostruts, all the parts being mounted after the manner of my invention,some of the blocks being shown in section and some in elevation. Fig. 2is a view of a portion of a difierent form of truss, the blocks beingshown in section and applied after the same manner as in Fig. 1. Fig. 3is a side elevation of the king-head shown in Fig. 1, but on a largerscale. Fig. 4 is a plan view of the king-head. Fig. 5 is a plan of thebottom of the rafter-shoe, and Fig. 6 an end elevation of the same on alarger scale. Fig. 7 is an elevation of one of the dowels on a stilllarger scale, showing its pointed tops.

In all the figures like letters of reference, wherever they occur,indicate corresponding parts.

A represents the tie-beam of a truss, B B the rafters, and C O struts atan ordinary inclination.

Instead of resting the tie-beam directly on a wall, as D, I supply ametallic Wall-plate E a little wider than the beam, on the upper face ofwhich are cylindrical dowels a, let into auger-holes in the lower faceof the tile-beam, and in the outer edge of which is an upwardly:projecting flange 27 over which the cornice D is fitted. If the tie-beambreaks and falls (as when burned) the flange 19 holds the plate SerialNo. 504,318. (No model.)

fast, or, if the plate should move, the cornice alone would be affected,and not the main wall of the structure.

The rafters B, as will be observed, are cut square across at the ends.At the bottom they are sustained on the tie-beam by rafter-shoes of castmetal, each having cylindrical dowels a a on its under face. Lips c cextend down at each side below the upper margins of the tie-beams, so asto insure the maintaining of the correct position, and the deep inclinedface at receives the end of the rafter. The inclination of this faceshould vary with the inclination of the rafters in differently-inclinedroofs, so that it will properly receive it when sawed off square. A web9 is formed at the back of the ledge carrying the face d when thestructure is so heavy as to require this additional element of security.A small portion of the top and sides of the rafter are embraced by lipse e, cast on the shoe. Bolts f, inserted through the flat portion at thebottom of the shoe, secure the shoe to the beam. F is the king-headwhich receives the upper end of the rafters. These are held in place inthe head by the top and side margins 72 h, which are supplied for thepurpose, and the head is connected with the tie-beam by the kin g-bolt Gwhich passes through both parts. The head is also formed with ledges t"i, cast on the sides, which sustain ridge-timbers, as H H, extendingbetween the trusses.

The facesof the king-head should be also varied in inclination fordifierently-pitched roofs. For the inclination shown these faces shouldbe inclined as shown, so as to receive the ends of the rafters andafiord fair bearking-rod G, or subordinate tie-rods or queenrods G, andthe perforations are so located as to obviate cutting into the ends ofthe struts to admit the belts or rods.

The dowels a are pointed on their extremi ties, as at a", and thesepoints serve to mark the centers for the auger-holes which are to bebored in the timbers. The blocks or castings being placed on the timbersat the points where they are to be finally located, a slight tap on themcauses the points of the dowels to indent thewood. This marks thecenters, as required, to indicate the location where the holes for thedowels must be subsequently bored.

' By cutting the pieces square across economy in the length of timberrequired, as well as in labor, is effected. By avoiding the jointsusually required, as in scarfing, weakening of the timbers, by cuttingaway portions of them, is obviated. Under this system the truss can bebuilt correctly by any ordinary workman. The struts bear against theother timbers along one edge of each end, so that twisting is resistedby the bearing edge, and a single dowel to enter the end of the strut issufiicient.

The angles of the faces of the several eastin gs should correspond tothe angle of the timber which abuts against them. In Fig. 1 the rightside of the base of the king-post is shown in duplicate, one face beingat the proper angle for a strut, having the inclination shown on theleft side, and another face shown just outside of the first has theditl'erent angle to receive squarely the end of the strut having adiiterent angle shown on the right side.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is

1. In combination with the tie-beam of a truss and with a cornice D, thewall-plate E underlying a portion of the cornice and of the tie, havingdowels a engaging the tie, and an upwardly-extending ledge b engagingthe cornice, all cast integral and arranged to serve substantially asshown and described.

2. In combination with the tic-beam and rafter of a truss, a rafter-shoehaving side plates embracing the sides of the rafter and having edgelips taking hold of the sides of the tie-beam, the lower face of theshoe being provided with dowelpins, substantially as shown anddescribed.

3). In a truss, the head for the rafters having side extensions 7L, h,embracing the sides of the rafters and having supports i forridgetimbers and an aperture to receive the kingbolt, in combinationwith such king-bolt and with the timbers, and arranged to servetherewith, substantially as shown and described.

Signed at New York city, in the county and State of New York, this 16thday of March, A. D. 1894:.

LOUIS DUVINAGE.

Witnesses:

JOHN BUCKLER, WoRTn ()seoon.

